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Check for cascaded Unit Delay blocks

Check ID: mathworks.jmaab.jc_0624

Guideline: jc_0624: Usage of Tapped Delay blocks/Delay blocks


Identifies cascaded and tapped pattern of Unit Delay blocks.

This check requires a Simulink® Check™ license.

Check Parameterization

This check contains sub-checks that correspond to sub IDs specified in the MAB and JMAAB modeling guidelines. You can use the Model Advisor Configuration Editor to specify which sub IDs (one or multiple) to execute.

For reference, the MAB guideline sub ID(s) that are recommended for use by the NA-MAAB and JMAAB modeling standards organizations are:

  • NA-MAAB — No recommendations

  • JMAAB — a, b

Results and Recommended Actions

Guideline Sub IDConditionRecommended Action
jc_0624_a: Check Delay blocks usage in tapped patternSet of Unit Delay blocks in the model can be replaced by Tapped Delay block.Replace cascaded Unit Delay blocks with Tapped Delay block.
jc_0624_b: Check usage of cascaded Delay blocksSet of Delay blocks can be replaced by a single Delay block.Replace cascaded Delay blocks with a single Delay block.

Capabilities and Limitations

  • Runs on library models.

  • Supports exclusions of blocks or charts.

  • Analyzes content of library-linked blocks. By default, the input parameter Follow links is set to on.

  • Analyzes content in masked subsystems. By default, the input parameter Look under masks is set to graphical.